Just got retoid pocket 5, many questions.

So I got this device to play a small selection of games. Most specifically, openbor games, mugen, and a few super mario 64 romhacks.

My main question is, theres no specific guides for those. So is the main way people do this through winlator?

Also, i know there is the openbor app I can download, but i cant find a guide anywhere on how to actually add the games I want onto that app.